mail.optmath.com - dns.ninja

`mail.optmath.com`

DNSSEC	⚠️ Not signed
A	46.38.249.163^{🇩🇪 netcup-AS46.38.248.0/22 NETCUP-GMBH}
		PTR	`mxf9a3.netcup.net`

`optmath.com`

	DNSSEC	⚠️ Not signed
	A	2a03:4000:30:607::10:1592^{🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH}
	A	46.38.249.161^{🇩🇪 netcup-AS46.38.248.0/22 NETCUP-GMBH}
	NS	`root-dns.netcup.net` ⭐
	NS	`second-dns.netcup.net`
	NS	`third-dns.netcup.net`
	MX	`mail.optmath.com` ⭐
	MX	`mxf9a3.netcup.net`⁽⁵⁰⁾
	TXT	`v=spf1 mx a include:_spf.webhosting.systems ~all`
	SOA	`root-dns.netcup.net`dnsadmin@netcup.net 2020-02-26 #1

MX for

optmath.com

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DNS History

1 record (1 active, 0 former)

●A46.38.249.1632026-02-23 → 2026-08-02 · 4 obs

● 2026-02-23 01:56:38
○ 2026-07-02 13:39:42
● 2026-07-13 17:28:06
● 2026-08-02 10:31:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
optmath.com	root-dns.netcup.net, second-dns.netcup.net, third-dns.netcup.net	-

✅ Authoritative Response

Server:188.68.63.68

NS records: root-dns.netcup.net, second-dns.netcup.net, third-dns.netcup.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for optmath.com (unsigned zone)

⏱️ Timing

Total: 584ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`46.38.249.163`

Analysis

Mail Server Role

mail.optmath.com serves as a mail server for optmath.com.

As mail servers, mxf9a3.netcup.net and mail.optmath.com are regularly found together.

IP Addresses

mail.optmath.com points to a single IP number: 46.38.249.163.

Additional host names — mail.rettermusik.de, mail.labercast.de, mail.don-pepper.de and two others — share IP numbers with mail.optmath.com.